<?php
$out_summ=$_GET['sum'];
$url="https://merchant.roboxchange.com/WebService/Service.asmx/GetRates?MerchantLogin=falcon007&IncCurrLabel=WMZM&OutSum=$out_summ&Language=ru";
    $data=file_get_contents($url);
    $data=explode('<Rate IncSum="',$data);
    $data=explode('" />',$data[1]);
    $out_summ=$data[0];
    echo $out_summ;

?>